Alternanthera philoxeroides
Alternanthera philoxeroides
(alligatorweed)
Plants
Exotic
Collection Info
Point Map
Species Profile
Animated Map
Impacts

15 results for Alternanthera philoxeroides (alligatorweed)
Download Data
Click here for listing in all states

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1421180 TXHarris[No locality description provided]2011 12040101 West Fork San Jacinto 
229792 TXHarrisLake Houston1995 12040101 West Fork San Jacintoestablished
1470318 TXHarrisLake Houston2014 12040101 West Fork San Jacintoestablished
1421133 TXMontgomery[No locality description provided]2011 12040101 West Fork San Jacinto 
1470243 TXMontgomeryLake Conroe2009 12040101 West Fork San Jacintoestablished
1470406 TXMontgomeryLake Conroe2010 12040101 West Fork San Jacintoestablished
1470327 TXMontgomeryLake Conroe2012 12040101 West Fork San Jacintoestablished
229747 TXMontgomeryLake Conroe [just NW of Conroe]1995 12040101 West Fork San Jacintoestablished
1463745 TXWalker[Raven Lake] Huntsville State Park2018 12040101 West Fork San Jacintoestablished
1470511 TXWalkerLake Raven2011 12040101 West Fork San Jacintoestablished
1470647 TXWalkerLake Raven2012 12040101 West Fork San Jacintoestablished
1470569 TXWalkerLake Raven2013 12040101 West Fork San Jacintoestablished
1470489 TXWalkerLake Raven2014 12040101 West Fork San Jacintoestablished
1470512 TXWalkerLake Raven2015 12040101 West Fork San Jacintoestablished
1470648 TXWalkerLake Raven2016 12040101 West Fork San Jacintoestablished

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/10/2025].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.